Rehab, my man, rehab.
What have you done to strengthen your back? If you are repeatedly injuring it doing squats, take some time off squats and work on strengthening your actual back. Back extensions and Reverse Hypers worked well for me, but that is only after I got advice on what exercises would be beneficial for MY particular disc injury.
The back that the good doctor recommended is fantastic. Get it. Read it. Use it. Get some professional advice on what will effect your back. If you get an MRI report and email Dr Ryan, he maybe be nice enough to help you out.
Until you address the weaknesses you have, you are going to keep fucking up your back.